{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\toprule
&(1)&(2)&(3)&(4)  \\ \midrule
$ \beta^{ER} $ &    1.141\sym{**} &    1.147\sym{*}  &    1.172\sym{*}  &    1.172\sym{**} \\
                &  (0.577)         &  (0.609)         &  (0.602)         &  (0.584)         \\
\addlinespace
$ \beta^{COL} $&   -1.262\sym{**} &   -1.211\sym{**} &   -1.470\sym{***}&   -1.412\sym{***}\\
                &  (0.531)         &  (0.529)         &  (0.525)         &  (0.515)         \\
\addlinespace
$ \beta^{purpose} $&                  &    0.441\sym{***}&                  &                  \\
                &                  &  (0.064)         &                  &                  \\
\addlinespace
$ \beta^{prospects} $&                  &                  &    0.379\sym{***}&                  \\
                &                  &                  &  (0.070)         &                  \\
\addlinespace
$ \beta^{prestige} $&                  &                  &                  &    0.249\sym{***}\\
                &                  &                  &                  &  (0.061)         \\
\midrule
%Pseudo $R^2$    &     0.035         &      0.120         &     0.093         &     0.059         \\
Observations    &      978         &      978         &      978         &      978         \\
\bottomrule
\end{tabular}
}
